SK1-21A/31A

Rev4.6E

KIOSK PRINTER

SK1-21A

Technical Guide

SK1-31A

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SK1-21A/31A

General notice * The specifications may be changed for product improvement without notice. * Updated information listed on our website. http://www.sanei-elec.co.jp * Sanei shall not be responsible for any damages attributable to incorrect operation, handling or improper operation environments, except those specified in this manual. * Sanei shall not be responsible for any claim of infringement or alleged infringement of patents, designs, trademarks, copyrights or other rights brought by a third party in relation to its products. * Operate this printer only in the manners as described in the Technical guide. Otherwise, accidents or problems could possibly occur.

* Data are basically temporary; they cannot be stored or saved either for a long time or permanently. Please note that Sanei Electric shall not be responsible for any damages or lost profits resulting from the loss of data attributable to accidents, repairs, tests, and so on.

* If you have any questions, or notice any clerical errors or omissions regarding the information in the technical guide, please contact your dealer.

* Please note that Sanei Electric shall not be responsible for any results or effects resulting from operation of this Printer even if the information in the Technical guide.

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SK1-21A/31A

Precautions

Symbol display To use this equipment safety, or to protect the equipment from damage, the following

symbols are used throughout this manual to highlight safety information

Warning The symbol indicates that failure to observe these instructions or mishandling of this equipment could lead to severer injury or death

Caution The symbol indicates that failure to observe these instructions or mishandling of this equipment could lead to injury or only property damage.

Samples of symbol

The symbol indicates caution(including DANGER or WARNING).

The symbol indicates the action is prohibited.

The symbol indicates a required operation that must be performed.

When using the printer

Do not subject the printer to strong shocks by dropping or hitting it.

Avoid using the printer at the following location. It may cause failure. Locations with much dust, particles, water or oil. Locations with slanted surfaces or strong vibration. Locations with direct sunlight. near heating/warming equipments, or temperature over

60. Locations with temperatures of below -20, a relative humidity of 85％or more, dew condensation caused by extreme temperature change. Location with electromagnetic noise or corrosive gas.

Do not touch the dot line on the thermal head and driver IC with metal and sandpaper etc. There is a possibility for damage of those parts.

Do not touch the dot line on the thermal head with your fingures. The contamination may reduce the printing quality.

Do not use the printer if there is condensation occurs on the thermal head. If the condensation occurs, keep the power off until condensation evaporates completely.

Do not block the paper exit of the printer.

Do not use a volatile chemical such as thinner or benzene.for maintenance work.

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SK1-21A/31A

Do not pull the paper end from the exit forcedly when the printer cover is closed.

Turn off the printer power when trouble such as a paper jam occurs.

Do not use loose paper. It may cause paper jam.

Be careful of handling the thermal head to prevent heat elements and driver IC from exposure to static electricity.

When setting the printer

The details such as the setting positions of the printer shall be reffered to “3-7．Dimansions” Set the printer horizontally to the level, and make sure so the level not to be slanted.

Handling printer unit

Never disassemble or repair the printer ,AC adapter or power cord by yourself.

Do not use any AC adapter and power cord other than those specified.

Do not bend the AC power cord or place heavy objects on it. Doing so may damage

the cord and cause fire or electric shock.

Never use a damaged AC power cord. It may cause fire or electric shock.

Do not drop any metalic objects nor spill coffee,water or any other liquid.

Do not use the printer in a places where it will be exposed to excess moisture

or water spray. It may result in electric shock, short circuit and failure.

Do not connect or disconnect the ACadapter with wet hands. It may result in

electric shock, short circuit and failure.

As the thermal head may be very hot immediately after printing, do not touch it to avoid burning your fingers. Be sure that the thermal head is cool before replacing a paper or cleaning the thermal head.

Do not open the paper cover while printing.

Do not pull the paper when the cover is closed.

In the following cases, turn the printer power OFF and unplug the AC power cord from the outlet.

・Smoke, unusual noises or odd smells are emittied by the printer. ・When metallic objects is dropped or any liquid is spilled inside the printer.

Continueous use may lead to printer failure,fire and electric shock. Make sure the fault does not continue and contact dealers for further assistance.

If the printer is not to be used, turn the printer power OFF and leave the AC adapter disconnected from the outlet.

Warning

Caution

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SK1-21A/31A

Remove the interface cable or AC adapter from the connector or the receptacle by

gripping the connector or the AC plug. Never pull the cable itself.

Doing so may damage the cable or adapter.

Handling Paper Roll

Use the specified paper or equivalent. Use of other paper may reduce life of the thermal head and cause a decrease in printing quality Especially sodium(Na+)、potassium(K+) and chlorine(Cl-) containing substances can remarkably reduce the life of the thermal head.

Store the paper in a dry, cool and dark place.

When pasting printed pages, use water-bnased glue. (starch glue, synthetic glue, etc.)

The surface of thermal paper has been specially treated with a chemical agent to produce coloring by thermal chemical reaction. Do not expose the paper for a long time under bright light. Avoid storing in high temperature, high humidity,damp area and direct sunlight. Do not rub the paper with hard objects. Keep the paper away from organic solvents. Do not let the paper touch vinyle chloride film, erasers or adhesive tapes for hours. Do not place he paper on diazo print paper or wet, freshly made paper copies. Do not touch the paper with wet hands. It may cause fingerprint to be marks on the

paper or smudges.

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SK1-21A/31A

Table of contents

1．General Outlines.........................................................................................８

1- 1．Product Outlines ......................................................................................................８

1- 2．Features ....................................................................................................................８

1- 3．Classification............................................................................................................９

2．Handling Method .................................................................................... １１

2- 1．Recommendable paper and printer options......................................................１１

2- 2．Appearance...........................................................................................................１２

2- 3．Inside Structures..................................................................................................１３

2- 4．Setting Paper Roll ................................................................................................１４

2- 5．Paper near-end sensor ........................................................................................１５

2- 6．Changing 1-inch core adapter ............................................................................１６

2- 7．Adjust the paper position....................................................................................１６

2- 8．Clear paper jams ..................................................................................................１７

3．General specifications ........................................................................... １８

3- 1．Specifications.......................................................................................................１８

3- 2．Sensor ...................................................................................................................２０

3- 3．Printing area .........................................................................................................２１

3- 4．Print head and cutter position ............................................................................２１

3- 5．Paper sensor position .........................................................................................２２

3- 6．Paper feeding .......................................................................................................２４

3- 7．Dimensions...........................................................................................................２５

4．Functions ................................................................................................ ２９

4- 1．Self test printing...................................................................................................２９

4- 2．HEX Dump mode ..................................................................................................３０

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SK1-21A/31A

4- 3．Function setting mode ........................................................................................３０

4- 4．Setting the memory switch .................................................................................３２

4- 5．Memory switch setting menue............................................................................３３

4- 6．Adjusting printing density ..................................................................................３５

4- 7．LED display ..........................................................................................................３５

4- 8．Memory .................................................................................................................３７

5．Bezel Module .......................................................................................... ３８

5- 1．Operating Mode....................................................................................................３８

6．Presenter................................................................................................. ３９

6- 1．Specifications.......................................................................................................３９

6- 2．Operating Mode....................................................................................................３９

6- 3．Stock space and Exit space ................................................................................４０

7．Interfaces ................................................................................................ ４１

7- 1．USB........................................................................................................................４１

7- 2．Serial .....................................................................................................................４２

7- 3．Power supply........................................................................................................４４

8．Label print ............................................................................................... ４５

9．Maintenance............................................................................................ ４９

9- 1．Maintenance .........................................................................................................４９

9- 2．Service for trouble shooting ...............................................................................５０

10．Command systems .............................................................................. ５１

10- 1．Command table ..................................................................................................５１

10- 2．Data code table ..................................................................................................５４

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SK1-21A/31A

1．General Outlines

1- 1．Product Outlines

SK1-21(2-inch) & SK1-31(3-inch) are open frame printers equipped with Serial (RS232C) and USB interface. Super-compact design and ruburst body make it possible for installing limited space enclosures under wide range of operating environment. The reliable SK1 printers performimg for versatile functions are ideal for a wide variety of kiosk systems.

1- 2．Features

Small and Ultra-Light Weight, Designed for wide variety of systems and equipments

Max 200mm/sec high-speed printing

Variety of paper core holders (adjustable for half inch and 1-inch inner core roll)

1D and 2D (Option) Barcode printing

Max φ120mm paper roll as standard

Various Sensors built-in : Paper near end, Paper empty, Head open sensor, Black-Mark sensor

(Option), Gap sensor (Option)

Wide variety of paper size (58, 60, 80, 83mm)

Autoloading function

Selectable for Partial cut or Full cut

Versatile operating environment

Available for Windows driver,Utility Driver and Linux driver

Available for Remote Status Monitor

＜Other functions＞

Capable of HEX dump printing and self test printing. Various settings of characters, such as enlarged and upside down characters Adjustable for printing line space. Graphic printing by bit image. Downloaded characters and user-defined characters can be printed. Adjustable for paper feed amount. With Ruled Line command, table layouts can be easily printed. Page Mode allows erect/inverse images, clockwise 90 degrees/counterclockwise 90

degrees and overlapping printing. Page Mode allows setting the paper length to a maximum of 250mm. Using the Image Registration command, the printing layout can be set up beforehand. With the Printing Density command, the printing density can be changed. The command system conforms to ESC/POSTM. Capable of registering print images in internal flash memory.

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SK1-21A/31A

1- 3．Classification

The product is classified according to the Product Number as follows: <3-inch Kiosk printer>

SK1-31 A S J 3 - 3 L Q B

Option B ： Bezel P ： Presenter D ： LED Bezel

2-Dimensional Barcode Q ： Installed Without Q： Not available

Paper Core Diameter

L ： φ25.4mm Without M/L ： φ12mm

Paper Width

1 ： 58.0mm 2 ： 60.0mm 3 ： 83.0mm Without 1/2/3 ： 80.0mm

Sensor：

1: Black mark（Right） 2: Black mark（Left） 3: Gap sensor 4: Gap sensor & Black mark（Right） 5: Gap sensor & Black mark（Left） Without 1/2/3/4/5 : None

Font J ： Japanese Font F ： ASCII

Interface

S ： Serial ＋USB Paper Holder type

A ： Arm Unit LA/RA Series

SK1-31 ： 3” model

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SK1-21A/31A

<2-inch Kiosk printer>

SK1-21 A S J 3 - 1 L Q B

Option

B ： Bezel P ： Presenter D ： LED Bezel

2-Dimensions Barcode

Q ： Installed Without Q： Not available

Paper Core Diameter

L ： φ25.4mm Without M/L ：φ12mm

Paper Width

Without ： 58.0mm 1 ： 60.0mm

Sensor Without： Reflection Sensor(Right)

1：Reflection Sensor(Left) 2：Gap Sensor + Reflection Sensor(Right) 3：Gap Sensor + Reflection Sensor(left)

Font

J ： Japanese F ： ASCII

Interface

S ： Serial ＋USB

Paper Holder type A ： Arm Unit LA/RA

Series

SK1-21： 2” model

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SK1-21A/31A

2．Handling Method

2- 1．Recommendable paper and printer options

It is recommended to use the following paper for printing at SK1 Kiosk printers.

(The paper rolll can be purchased through the stores/shops you have purchase and the details of the paper information can be inquired to the stores/shops and/or distributors)

1. Recommendable paper

Specifications Recommendable paper Part No. TF50KS-E2D (Nippon Paper Industries) Sensitivity Standard duration Paper width 57.5±0.5mm 79.5±0.5mm Thickness 59µm Roll diameter Φ120mm or less Core Internal dia. Φ12×External dia.Φ18mm Thermal paper side External Internal paper end No adhesion・No fold External paper front Cut straight and put a seal

End mark A red stripe on one side of the paper

Width: 2 to 5mm Length: 500±100mm

2. Printer options It is available for the following options for SK1-21/31 Kiosk printers.

Option contents Name Specifications Large paper holder HL2-SK1 Paper holder for φ200mm diameter Large paper holder HL3-SK1 Paper holder for φ200mm diameter 1-inch Core adapter BUSH 24.9 Attachment core holder for φ25.4mm diameter

Serial cable CB-SK1-S4 Cross connection, approx 60cm, D-Sub9 DC cable CB-SK1-D1 DC cable, approx 1m

USB cable BLM-1.5U USB cable, approx 1.5m AC adapter SA3-27A24O-1 Standard AC adapter (24V)

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SK1-21A/31A

2- 2．Appearance

①Paper holder : Φ120mm paper roll is installed. ②Head open lever : Printer head is opened by side lever ③Chassis fixture hole : Mmounting the printer on screws ④Status LED : Printer status is shown by LED ramp ⑤FEED Switch : Feeeding the paper ⑥SELECT Switch : Use for setting the printer and printing HEX dump ⑦Gap sensor adjustment screw : Adjust the sensitivity of label gap ⑧Near end sensor : Detect paper near end ⑨Power supply connector : for DC power supply ⑩Serial connector : for Serial ⑪USB connector : for USB ⑫1-inch core adapter : for1-inch inner core of paper roll

The standard model is not installed core adapters.

② Head open lever

①Paper Holder

③ Chassis fixture hole

⑥ SELECT Switch

⑤ FEED Switch

④ Status LED

⑦ Gap Sensor adjustment screw

⑧Near End Sensor

⑪ USB Connector

⑩ Serial Connector

⑨ Power-supply Connector

⑫1-inch core adapter

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SK1-21A/31A

2- 3．Inside Structures

① Print thermal head

Print characters and graphics to thermal papers.

② Paper end sensor Detect paper empty. If the sensor detects paper empty, the printer stops printing.

③ Platen roller

Feed the thermal paper on friction with the print head. ④ Auto cutter

Cut the thermal paper (Selectable for full cut or partial cut)

①Print thermal head

② Paper Eempty Sensor

③ Platen roller

④ Auto cutter

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SK1-21A/31A

2- 4．Setting Paper Roll

① Set a roll paper to paper holder. Widening one side of paper holder and putting in the roll paper. Then setting the paper to

holder.

② Use head open lever

Press the head open lever to lift the head unit as shown in below. Set the paper pulling out the paper end straightforward and close the head unit.

2. Auto-loading system

The paper is passed through thermal head as following, paper is set to feed automatically when the paper-empty sensor detects the paper.

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SK1-21A/31A

2- 5．Paper near-end sensor

Sensing roll paper’s remaining amount can be adjusted in three levels by sliding near-end-sensor. The level is set based on core’s diameter in factory default.

Adjusting knob on the holder must be slide in the direction of an arrow by using a fine-tipped tool like tweezers.

（Unit：mm）

Position Detectable paper diameter 1 φ21.0±2mm 2 φ24.5±2mm 3 φ35.0±2mm

・Do not mount the printer on vibrating or slanted surfaces. ・The external diameter should be used as a reference value.

Near-end sensor

Adjusting knob

Scale

Enlarged view

Slide direction

Scale

Slide direction

Adjusting knob

Adjusting Knob is set at No.3 when 1-inch core adapter is installed.

Enlarged view

Near-end sensor

1-inch core adapter

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SK1-21A/31A

2- 6．Changing 1-inch core adapter

1. How to change 1-inch core adapter Roll paper can be replaced by changing from standard φ12mm to φ25.4mm.

1-1. How to attach the the attachment holders

Mount attachment holders to mounting holes.

1-2. How to detatch attachment holder Clip the attachment holder and pull away in the direction of an arrow below.

2- 7．Adjust the paper position

1. How to change the position of Holder arm. Three types of roll paper (φ120mm, φ102mm, φ83mm in diameter) is available by setting positoin of holder arms.

1-1. How to setting

Detach polyslider and pull out shaft, and then detach holder arm. Next, put a spring on a projection and set the holder arm on the spring. Finally, put the shatf and fix it by the polyslider.

Mounting holes

Push and attach

1-inch core adapter

1-inch core adapter

Pull away from the Attachment holder.

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SK1-21A/31A

2- 8．Clear paper jams

1．First of all, turn OFF the printer power. 2．Press the head open lever to lift up the print head. 3．Remove the jammed paper. 4．Close the print head and turn ON the power.

Turn the printer power OFF. Don’t put fingers into paper exit.

Press the head open lever to

lift up the print head. Remove the jammed paper

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SK1-21A/31A

3．General specifications

3- 1．Specifications

Model SK1-31A SK1-21A Printing method Direct line thermal

Paper width 58/60/80/83mm 58/60mm Print width 54/56/72/80mm 54/56mm

Number of dots 432/448/576/640dot 432/448dot Resolution 8dot/mm(203dpi)

Maximum printing speed Max.200 mm/s *Note 1 Paper holding method Φ120mm paper holder

Interface Serial(Max.115.2kbps), USB2.0

ASCⅡ PC437/850/852/857/858/863/865/866/860/862/864/737

WPC1252/1252_2/1254/1250/1251

Square form of kana (the Japanese syllabary) Charactors

Download available Printing Width Printing Width： 54/56/72/80mm ASCⅡ16 dots 8×16 dots(W×H) 54/56/72/80 lines ASCⅡ 24 dots 12×24 dots(W×H) 36/37/48/53 lines Jfont 16 dots 16×16 dots(W×H) 27/28/36/40 lines

Font /Dots/ Lines

Jfonrt 24 dots 24×24dots(W×H) 18/18/24/26 lines

Paper Sensors Near end Sensor/Paper empty Sensor

(OPTION) BM(Black mark) Sensor/Gap Senssor

Near end Sensor/Reflection Sensor (OPTION) Gap Sensor

Memory Input buffer 8k bytes

User memory、Non-volatile memory Logo registration Download bit image

Barcode UPC-A/E、JAN13/8、CODE39、ITF、CODABAR、CODE128 2D bar code（Option） QR、MaxiCode、MicroPDF417、PDF417、DataMatrix

Command systems ESC/POS compatible *Note 2 Setting position Horizontal surface

Regulation VCCI, FCC, CE, CLASS A

Printing life Pulse activation 200million pulses or more Note3 Abrasion resistance 150Km or more

Cutter life Cutting life 1.5 million cuts or more (Thickness 75um or less)

Power supply DC Power supply DC 24V±5% / TYP 2.7A

Current consumption Standby： 70mA or less Printing： Average 2.5A *Note 3 (Peak 7.5A)

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SK1-21A/31A

*Note1：Use AC adapter, printing rate less than 25%.

*Note2：ESC/POS is registered trademark of Seiko Epson Corporation.

*Note3：DC24.0V, Printing rate 12.5%, at room temperature

*Note4：Not permitted with the smaller width paper roll.

Friction between the head and the platen roll in the no paper area may degrade print quality.

Model SK1-31A SK1-21A

Operating environment Temperature： -20 to +60 Humidity： 20%RH to 85%RH（No condensation） Printing quality is guaranteed from+5 to +40

Guaranteed area of acceptable temperature and humidity

Storage environment Temperature： -30 to +70 Humidity： 10%RH to 90%RH（No condensation）

Weight 630g（Without paper roll） 525g（Without paper roll ） φ83mm 127×129.2×73.6mm(W×D×H) 104×129.2×73.6mm(W×D×H) φ102mm 127×137.3×79.5mm(W×D×H) 104×137.3×79.5mm(W×D×H)

Dimensions (without

protruding parts) φ120mm 127×145.5×85.4mm(W×D×H) 104×145.5×85.4mm(W×D×H)

Paper roll

Paper width: 58 / 60 / 80 / 83 mm Note 4 & supplement

Paper thickness： 59µm to150µm (52g/m2 to 128g/m2) External dimensions： φ120mm or less Core diameter：

Internal/External dia. φ12.0mm/18mm Internal/External dia. φ25.4mm/31.4mm

Standard of print density

Part No. Thickness Print density TF50KS-E2D 59µm 1.0

TF11KS-ET 145µm 1.2 P220AC 105µm 1.1 PD160 75µm 1.05 HP220A 65µm 1.0 Fan fold：

The printer prints fan fold paper. For further information, please contact a local dealer.

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SK1-21A/31A

3- 2．Sensor

(1) Paper-end sensor

The paper-end sensor is installed into the paper path and the photo-interrupter detects the existence of paper in the printer. When the paper runs out, the red LED lights and the printer goes into error mode and stops in the printing process. After the paper is replaced, the printer resumes printing.

・Once the paper end sensor sends the paper empty signal, the printer stops printing. ・As soon as the paper end strip appears, replace the paper roll.

(2) Head open sensor

The head open sensor detects whether the print head is open or closed. Once the sensor detects the head open signal, the printer stops printing and goes OFF-Line, the Error LED lights Red. The printer resumes printing after the head is closed.

(3) Thermistor

The thermistor built in the print head detects the temperature of the print head. If printing at a high printing rate for a long time, the print head temperature rises and the head may become overheated. To prevent overheating, the printer stops printing when the temperature is beyond a certain level, and blinks the red Error LED.

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SK1-21A/31A

3- 3．Printing area

Printing area

Paper width/Printing width A B C D 58mm /54mm 58 54 2 2 60mm / 56mm 60 56 2 2 80mm / 72mm 80 72 4 4 83mm / 80mm 83 80 0 3

The left and right margins are approximate distance from paper edge and will shift about ±1mm depending on the paper path, paper position and tolerances.

3- 4．Print head and cutter position

Print head and cutter position

・The numeric values in the figure are nominal center values. Leave enough margin for the cutting position to account for paper flex or variability. ・The position of partial cut is varied by paper width. ・Partial cut is designed to keep the paper at the center of 80mm(SK1-31) or 58mm(SK1-21) paper.

Margin C

Paper width A

Print area B Margin D

Fe

ed

dire

ction

Print area

Pa

pe

r fee

d

Approx.8.6mm

Cutting position

Thermal dot lines on the print head

Approx.7.0mm

Limited length for feedback

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SK1-21A/31A

3- 5．Paper sensor position

SK1-31

Sensor Distance from paper edge （±1.0mm）

Black mark（Left） Note1,2,3 7.3mm Gap sensor Note1 29.0mm

Paper empty 50.2mm Black mark（Right） Note 1,2,3 72.0mm

Note1: Black mark sensor and gap sensor are embedded in the factory as options.

Note2: Choose the position of Black mark sensor either (L) or (R).

Note3: Black mark on reverse of thermal paper is sensed.

Pa

pe

r fee

d

Paper edge Thermal dot line

Black mark (L)

Gap sensor

Paper empty

Black mark(R)

Approx.13.5mm

Left position of BM sensor

Label Gap sensor.

Paper empty sensor.

Right position of BM sensor

Pepar Feed

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SK1-21A/31A

SK1-21

Sensor Distance from paper edge （±1.0mm）

Reflection sensor（Left） 4.2mm Gap sensor 19.3mm

Reflection sensor (Right) 54.2mm Note1: Black mark sensor and gap sensor are embedded in the factory as options.

Note2: Black mark on reverse of thermal paper is sensored.

Pa

pe

r fee

d

Paper edge Thermal dot line

Reflection sensor（Left）

Gap sensor

Reflection Sensor（Right）

Approx.13.5mm

Left position of BM sensor

Label Gap sensor.

Right position of BM sensor

Pepar Feed

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SK1-21A/31A

3- 6．Paper feeding

(1）Avoid deterioration by backlash feeding Backlash in the paper feed mechanism may lead to under feeding and crowding of characters on

adjacent lines. Be sure to always turn the paper feed motor 24l steps（3mm）at the start printing and initialization, and after opening and closing the thermal head.

（2）Notice on graphic printing

If the printer must wait for data from host systems while printing, it will temporarily stop printing and feeding paper. After the printer receives new data and resumes printing, the paper feeding of 1 to 3 lines may become irregular, especially if it is printing a bit image. In graphic printing, you may see irregular printing if the single lines of data are specified for Raster bit images.

Specify a minimum of 16 lines or more when graphic data is printed. (3) About paper cut

To prevent the printer from paper jam, the printer automatically feeds the paper about 1mm after cutting process. Therefore printing position is added 1mm to cutting position

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SK1-21A/31A

3- 7．Dimensions

External dimensions（Unit：mm） SK1-31 with paper φ102mm

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SK1-21A/31A

SK1-31 with paper φ83mm／φ120mm

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SK1-21A/31A

SK1-21 with paper φ102mm

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SK1-21A/31A

SK1-31 with paper φ83mm／φ120mm

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SK1-21A/31A

4．Functions

4- 1．Self test printing

The printer prints characters and barcodes at self test printing.

Printing method

① Turn ON the power switch while pressing the FEED switch. ② When the LED lights up and the printer starts printing, release the FEED button. ③ After completing the self test printing, the printer goes to Standby mode.

[Printing samples]

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SK1-21A/31A

4- 2．HEX Dump mode

Data entered from the computer is printed in hexadecimal numbers and characters. Printing method

① With pressing the SELECT button, turn on the power switch. ② When the LED lights up and printer starts printing, release the SELECT button. ③ After printing the following “HEX DUMP MODE”, starts Hexadecimal mode. ④ Prints hexadecimal numbers and characters entered from the host system. ⑤ Press the power switch to cancel the HEX dump mode.

［Example］

4- 3．Function setting mode

There is a function setting mode to switch register functions in the memory manually. Functions are called up by the SELECT and FEED buttons and the printer prints registered

functions. (1) About memory switching The memory switch is classified as follows. ① COMMON SETTING： Common functions ② INTERFACE SETTING： Basic interface functions

(2) Function setting method 1. While pressing the FEED/SELECT button, turn ON the power switch. 2. When the LED lights up and printing starts, release the button. 3. The printer prints out the current setting mode and returns to that function setting. 4. To change the current function setting, press the feed button. 5. Refer to setting flow chart in “Setting of memory switch.”

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SK1-21A/31A

---COMMON SETTING--- PAPER FEED = OFF OFFLINE BUSY = ON

SELECT SENSOR = Reflection MARK DETECTION = OFF MARK RE-DETECTION = OFF CHARACTER TABLE = PC437 PRINT DENSITY = 100% PRINT WIDTH = 80/72 MECHANISM SPEED = 200mm/s SELECT NEAR-END = ON CUT AFTER FEED-SW = NON-CUT USB DEVICE CLASS = PRINTER USB PORT NUMBER = NON COMMAND MODE = MODE-A BEZEL MODE = NON SELECT REELER = OFF PRESENTER MODE = CLAMP/RETRACT Act. For Driver = INVALID ---INTERFACE SETTING--- BAUD RATE = 115200bps BIT LENGTH = 8Bit PARITY = Non BUSY CONTROL = RTS/CTS CTS AVAILABLE = INVALID ---MEMORY SWITCH--- 0x00 0x20 0x28 0x07 0x1E 0x00 0x3C 0x04 0x00 0x00 Serial ID = Non Data ---CURRENT VOLTAGE--- 24.0V ---SENSOR--- Reflection = 0.8V Transmission = 0.8V Bezel sensitivity = 2.0V

Table 2 Example

Common functions

Basic interface functions

Current memory switch by HEX mode(Lead from DC2K command)

Current supply voltage

Mark sensor detection level （Threshold voltage）

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SK1-21A/31A

4- 4．Setting the memory switch

Follow the flow chart to change the parameter. As setting parameter is printed, choose the right parameter by manipulating the FEED and SELECT buttons.

After completing the parameters set up, data are stored and the printer goes to standby mode.

ENTER SETTING ?

ENTER COMMON SETTING ?

ENTER INTERFACE SETTING ?

Change the setting of INTERFACE ・BAUD RATE ・BIT LENGTH

: :

MODE END (Finish)

NO

NO

Change the setting of COMMONＰＡＰＥＲ FEED

Function setting mode

YES

YES

※ Prints the below after completing the setting: SETTING COMPLETE SETTING MODE END. ※ The setting mode is finished and the printer goes to standby mode. Modified data are stored automatically.

YES

YES

YES : FEED button ------ Decide

NO : SELECT button ------ Move to next

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SK1-21A/31A

4- 5．Memory switch setting menue

（1）COMMON SETTING

Menu Default Value Description PAPER FEED OFF OFF

ON(10mm) / ON(20mm)

ON(30mm) / ON(40mm)

ON(50mm) / ON(60mm)

Enable/disable paper feed after closing the print head.

・ When paper feed is ON, the printer feed the paper as

specified (Xmm) length after closing the print head and

make full-cut after feeding the paper.

・ When paper feed is OFF, the paper is not fed.

・ The value is changeable using the DC2K command.

OFFLINE BUSY ON ON

OFF

Enable/disable OFFLINE BUSY when an error occurs.

＜At selecting ON＞

・The communication becomes OFF-LINE when an error

occurs. The printer stops printing and maintained the

receiving data until the error is cleared.

＜At selecting OFF＞

・The communication becomes ON-LINE when an error

occurs. Receiving data during an error are continuously

processed and printing data are not stored.

・ When bezel is used, this mode is selected.

SELECT

SENSOR

Reflection Reflection

Transmission

Select the mark sensor for label printing.

・Reflection ･･･ Detected by Black mark sensor

・Transmission･･･ Detected by Gap sensor.

MARK

DETECTION

OFF OFF

ON

Enable/disable the Black mark sensor/Gap sensor

functions.

MARK

RE-DETECTION

OFF OFF

ON

Enables/disables re-detecting function after the paper

setting.

CHARACTER

TABLE

PC437 KATAKANA

PC437 / PC850

PC852 / PC857

PC858 / PC863

PC865 / PC866

WPC1252 / PC860

WPC1252_2

PC862 / PC864

WPC1254 / WPC1250

WPC1251 / PC737

Select the characters.

- PC862 font was added after V1.87

- WPCXXXX font was added after V1.68

- PC864 font was added after V1.98

- PC737 font was added after V1.99

PRINT

DENSITY

100% 80% / 90%

100% / 110%

120% / 130%

140% / 150%

Specify the printing density.

PRINT WIDTH Comply with

classified

paper width

80/72

60/56

58/54

83/80

Select the paper width.

(Printing width is set at the factory)

MECHANISM

SPEED

200mm/s 110mm/s

130mm/s

150mm/s

170mm/s

190mm/s

200mm/s

Select maximum printing speed

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SK1-21A/31A

(2）INTERFACE SETTING

Menu Default Value Description SELECT

NEAR-END

ON ON

OFF

Select near end sensor

ON ･･･ activate sensor

OFF ･･･ cancel sensor

CUT AFTER

FEED SW

NON-CUT NON-CUT

PARTIAL-CUT

FULL-CUT

Select cutting operation after FEED switch is ON.

* function added after V1.20

USB DEVICE

CLASS

PRINTER PRINTER

COMMUNICATION

Selects device operation mode of USB

* function added after V1.20

USB PORT NUMBER

NON NON 1-9

Select USB Port Number

・NON ･･･ Selects arbitrary USB Serial ID

・1-9 ･･･ Selects USB Serial ID 1-9

* function added after V1.91

COMMAND

MODE

MODE-A MODE-A

MODE-B

Select command emmuation

* function added after V1.20

BEZEL MODE

NON NON

MODE-A

MODE-B

MODE-C

Select bezel mode

* function added after V1.30

SELECT

REELER

OFF OFF

ON

Select reeler mode

* function added after V1.51

PRESENTER

MODE CLAMP/

RETRACT

CLAMP/RETRACT

CLAMP/EJECT

CLAMP ONLY

CONTINUOUS

Backward collecting operation

Forward collecting operation

Ejecting operation

Continuous ejecting operation

* function added after V1.89

Act. For Driver INVALID INVALID

VALID

Set driver’s activity.

* function added after V1.99

Menu Default Value Description

BAUD RATE 115200bps 1200bps

2400bps

4800bps

9600bps

19200bps

38400bps

57600bps

115200bps

Select the baud rate.

BIT LENGTH 8bit 8bit

7bit

Select the bit length of serial communication.

PARITY Non Non

Odd

Even

Select the parity of serial communication.

BUSY

CONTROL

RTS/CTS RTS/CTS

Xon/Xoff

Select the flow control of serial communication.

CTS

AVAILABLE

INVALID INVALID

VALID

Select the CTS signal of the serial communication

INVALID ・・・ CTS signal is invalid.

VALID ・・・ CTS signal is valid.

* function added after V1.99

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SK1-21A/31A

4- 6．Adjusting printing density

Paper sensitivity varies by type of thermal paper. Choose the right density to realize best printing quality and reliable printing. (The excess heating of the thermal head may cause the reduction of head life and contamination) Allows setting density form 60 to 150％. The default value from the factory is 100% for maintaining proper printing quality. Details of the adjustment method are written in “Command systems DC2 ～ (Set print density).

Printing density

Part No. Maker. Density TF50KS-E2D Nippon Paper 100％ TF50KS-EY Nippon Paper 100％ TF11KS-ET Nippon Paper 120％

F230AA Mitsubishi 100％ HP-220A Mitsubishi 100％

4- 7．LED display

When an error occurs, the STATUS LED lights or blinks depending on the type of errors as follows. 1. No error signal is detected.

Standby It is possible to print and the printer waits for printing data by ONLINE. Initialization Initialize printer memories. The printer goes OFFLINE during initialization and

status LED blinks. After completing initialization, the printer goes standby.

2. Auto-recovery error

Temperature error The print head temperature is increased when heavy-duty printing is continuous. If the print head temperature exceeds70 degrees C, operation of the print head is automatically stopped to prevent overheating. The status LED blinks and the printer goes OFFLINE. The printer resumes printing when the head temperature falls to 60 degrees C or lower.

Paper empty Detect the paper empty through near end sensor and paper empty sensor.

The status LED blinks at paper near end and keeps the printer ONLINE. After the paper runs out and the printer detects paper empty, the status LED turns On

and the printer goes OFFLINE.

Print head open When the print head is lifted up, the status LED turns ON and the printer goes OFF-LINE. After closing the print head, the printer goes on standby.

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SK1-21A/31A

3. Unrecoverable error

Auto cutter lock When the cutter is blocked by a paper jam, the status LED blinks.

Press the head open button to return the cutter to its home position. If the cutter does not return, keep the print head closed and contact a local dealer.

Voltage error When the printer detects abnormal voltage, the printer blinks the LED and goes OFFLINE.

Check the power supply voltage and if the problem is not cleared, please contact a local dealer. 4. LED status

LED status /:Turn ON red and green for 0.1sec :Turn OFF for 0.1sec

No error signal is detected

Status LED Standby ON (Green LED) Initializing (Green LED)

Auto-recovery error

Status LED Temperature error(≒70 or more)

(Red LED)

Detect near end (Green LED) Paper empty ON (Red LED)

Print head open ON (Red LED)

Unrecoverable error

Status LED Auto cutter lock (Red and Green LED) Upper limit voltage error (≒27.0V or higher）

(Red and green LED)

Lower limit voltage error (≒18.0V orlower )

(Red and green LED)

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SK1-21A/31A

4- 8．Memory

（1）Structure of memory Table1. Capacity

No Memory Size(Unit: Byte)

1 Input buffer 8,192

2 User memory 8,192

3 2D barcode（Option） 34,480

（2）Input buffer Buffer memory stores input data from the interface.

（3）User memory User memory is used to store external characters, download characters and bit images. Users are able to manipulate the area freely. Calculate the available memory size due to

the limited amount of memory available. If there is no available memory, erase the used memory to free up enough space.

（4）2D barcode (option)

2D barcode printing is available as an option. The 2D barcode is manipulated for editing and analysis of data within the assigned area. For detailed information, refer to GS Q command.

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SK1-21A/31A

5．Bezel Module

There are 3 different Bezel Mode A,B and C. Setting Bezel mode is to be referred with the subject on memory switch.

5- 1．Operating Mode

Bezel Mode Functions Commonly worked at Bezel Mode A & B

The length of printing ticket is set at 60mm. If the length of ticket (paper) after cutting the paper is specified less than 60mm, the printerautomatically feeds the length to reach 60mm and execute full cut. Ex) If the setting length is 40mm, the printer feed 20mm more after printing the data. If the length of ticket is set beyond 60mm, the ticket length is adjustedas specified length and cutter mode is changed to partial cut.

Bezel Mode A Once setting this mode, the printer prints the data on paper continuously. ESC v and GS a commands is allowed to detect the information of existing (passing) paper in the bezel through equipped reflective sensor. But it is not enabled to stop the paper by this reflective sensor.

Bezel Mode B This mode is enabled to stop the each ticket (paper). Whithout taking out the ticket from the bezel, the printer does not print next ticket. When the printer receives next printing data but nobody does not take the ticket, such next data are ignored. ESC v, GS R1 or GS a command is allowed to check the status of existing paper in the bezel.

Bezel Mode C This function is basically worked for the same as Bezel Mode-A but This mode is not performed to adjust the paper length commonly worked at Mode A/B. The full cut is performed at this mode.

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SK1-21A/31A

6．Presenter

The details please refer to the separate document "product specifications". In this chapter, explain operating mode regarding a presenter function. Setting operating mode is to be referred with the subject on “4-5.Memory switch setting menue”.

6- 1．Specifications

- Available for three operating mode (Clamp mode/Retract mode/Eject mode &Continuous mode)

- Maximum 250mm for Paper issuing length.

- Maximum 240mm/sec for Paper issuing speed.

- Equip reflection-type photo sensor to detect paper.

- Maximum100um (85g/m2) for loading paper thickness.

6- 2．Operating Mode

（1）Clamp / Retraction Mode / Eject Mode During printing and feeding, Paper automatically feed out syncronized while the paper is caught by clamp mode. After that, the paper is removed over the time-out by retraction mode or eject mode. The timing chart is shown as below.

（2）Continuous mode Presenter is continued to feed syncronized with cutting by Continuous mode. This mode is recommended if 250mm paper is over. Timing Chart is shown as below.

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SK1-21A/31A

(3) The other specification

Specifications Contents

Paper feedd calibration When receipt length is less than 50mm. Cutting is worked with calibrating automatically to length more than 50mm.

Cutting Cutting is operated by changing partial-cut to full-cut.

Waiting for removing paper

After cutting, issuing is stopped until paper is removed. Status of paper can be read by a status command.

6- 3．Stock space and Exit space

※1. Allow stock space for paper roll in accordance with the paper length of printing. The hight of stock space is to be more than 1/2 of the paper length. ※2. For retraction of printed papers, place the retraction box at the exit of printed papers. The box height is to be 1.5 times more than the paper length.

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SK1-21A/31A

7．Interfaces

7- 1．USB

(1) Pin layout Connector: Mini-B type 5-PIN This printer is equipped with USB version 2.0 for high speed data transfer.

The device class is “Printing Device.”

Pin Signal Direction Function

1 VBUS - Detect connect/disconnect of USB

2 D- I/O USB data (-)

3 D+ I/O USB data (+)

4 N.C

5 GND - GND

（2）Electronic characteristic

Parameter Signal Conditions Min. Max. Unit

（Power supply voltage）

VBUS 4.40 5.25 V

（Input level）

Differential input sensitivity VDI |(D+)-(D-)| 0.2 V

Differential common mode

range

VCM Including VDI 0.8 2.5 V

Single end receiver threshold VSE 0.8 2.0 V

（Output level）

“L”Level VOL RL of 1.5kΩ to

3.6V

0.3 V

“H”Level VOH RL of 15kΩ to

GND

2.8 3.6 V

1 5

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SK1-21A/31A

7- 2．Serial

(1) Pin layout Connector: MIL-C-83503 (10pin MIL Standard) Cvilux CH87102HA00 or equivalent Recommendable plug Cvilux CA2110SA1A0 Hirose HIF3BA-10D-2.54R Amp 1658621-1 or equivalent socket

Pin Signal Direction Function

1 N.C ――

2 DTR ―― DSR loop connect

3 RxD Input Serial data input

4 RTS Output Request to send

5 TxD Output Serial data output

6 CTS Input Clear to send

7 DSR ―― DTR loop connect

8 N.C ――

9 GND ――

10 N.C ――

DTR is used to control data transmission to some host systems. When the host system is communicated by DTR, use loop connect of the host system.

(2) Conditions Baud rate: 1200 to 115200bps Parity: None, Odd, Even Bit length: 7, 8 bit Busy control: Hardware control(RTS/CTS/Software control(XON/XOFF)

1 2

9 10

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SK1-21A/31A

(3) Hardware control High/Low of RTS signal is used to control data transmission to the host system.

RTS signal becomes low if the receiving buffer is filled out curtain level (①) The host side should stop sending data if RTS signal is low. If the data in the input buffer is reduced to curtain level, RTS signal goes high and re-start sending remained data (②)

RTS

RxD

PRINT

PAPER

POWER ONbuffer

②

EMPTY

buffer

①

(4) Software control(XON/XOFF)

Xon(11H)／Xoff(13H) signal is used to control data transmission to the host system. Xoff signal is sent to host system if the receiving buffer is filled out curtain level.(①) The host side should stop sending data if Xoff signal is received. If the data in the input buffer is reduced to curtain level, Xon signal is sent to the host system and re-start sending remained data (②)

TxD

RxD

PRINT

Xon Xoff Xon XonRTS

Xoff

PAPEREMPTY

POWER ONbuffer

①

buffer

②

（5）Conditions of input / output signal

Rate value Item Condition

Min. Typ. Max. Unit

High input voltage RxD、CTS +2.8 ― +15 V

Low input voltage RxD、CTS -15 ― -2.8 V

High output voltage TxD、RTS

(RL=3KΩ)

+2.8 ― +15 V

Low output voltage TxD、RTS

(RL=3KΩ)

-15 ― -2.8 V

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SK1-21A/31A

7- 3．Power supply

(1) Pin layout Connector ： Hirose DF1BZ-4P-2.5DS or equivalent

Pin Signal Direction Function

1

2 DC+ － Power supply (+)

3

4 DC- － Power supply (-)

※Depending on printing data, large peak current runs in the power cable. Consider the voltage drop caused by cable impedance and allow enough margin when choosing the power cable.

1 4

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SK1-21A/31A

8．Label print

There is the label mode to print the label paper and the receipt paper with black mark. Optional gap sensor (Transparent photo interrupter) and black mark sensor (Reflective photo

interrupter) are sensed to top of label form.

（1）Set up label printing 1. Set COMMON SETTING in the memory switch. (Refer to IV-5 Memory switch)

・Select the type of sensor by SELECT SENSOR. ・Enable MARKING DETECTION ・Enable MARK RE-DETECTION

2. Set the default value of initial printing information by DC2 L command. The information includes label length, gap, stopping position after printing label and

top of form. 3. Sensitivity of embedded sensor is changed by the DC2 mrk command. Adjust sensitivity according to labels. (Refer to command reference I-16)

4. Press FEED button or send DC2 B、DC2 I when the sensor is enabled to re-detect

marking position after replacing the paper or turn the printer power ON. 5. The sensor is detected as paper empty if marking width is beyond 8mm. 6. Command for labels are listed in “Command ReferenceⅠ-16. Label” （2）Label mode

There are intermittent label mode and continuous label mode installed in the printer. 1. Intermittent label mode

Feed each label to the position of the paper cutter. The printer prints the next label after back feeding the label. This mode is useful to remove each label by each print. Always retain the base paper. If the base paper is cut and the distance between edge of the base paper and the front of the label becomes shorter than 15mm, the label paper is peeled off while back feeding.

Note1. Adjust the cut position by command DC2 L. Note2. Set the amount of back feed not beyond back feeding limit and DC2 L n3. Note3. Thickness and length of labels and base papers may cause unexpected results

during back feeding. Please make sure the label paper works for back feeding. 2. Continuous label mode

Prints each label continuously without back feed when label paper cannot be fed to the correct cutter position or it is hard to cut the label at the stopped position.

It is recommended to choose this mode when the height of the label is relatively short or back feeding cannot be performed.

Refer to the command setting for DC2 L / n3、n4 parameter 0.

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SK1-21A/31A

（3）Setting the media

Peel off labels within15mm from the end of the media and set the end emerging 10mm from the cutter. This prevents the label from sticking inside of the printer.

（4）Receipt paper with black mark Recommend designing black marks on the receipt as shown in below. No gap type continuous label should use the same design.

・If PCS of black marks is less than 0.9, black marks are not sensed and the page

might be skipped or the right length not detected. It causes the failure of sensing.・Prohibit pre-printing in the area designated for black marks. ・There is a feed tolerance ±2% between calculated value and actual length. Please take into account this tolerance when pre-printed paper is used.

※ The position of black mark is decided by that of black mark. ※ When 58mm／60mm width paper is used, the black mark sensor is installed on left side.

4～6mm

Black mark pitch 25 to 350mm

（Label length＋Gap）

12mm or more

Black mark（Reverse side） Density：PCS value≧0.9

Paper feed

Front（Print surface）

（Unit：mm）

12mm or more

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SK1-21A/31A

（5）Label specifications

SK1-31 prints label paper with black marks and without black marks. Use label paper complying with the following conditions.

Item No black mark With black mark

Recommendable media HW76B（Nippon Paper Ind.） Length: 94µm Thickness of base paper: 60µm Color on base paper: White Total thickness: 154µm or less（incl. adhesive）

Roll diameter Φ120mm or less Label core Φ25.4（Internal dia.）×Φ31.4（External dia.）mm Base paper width 57.5±0.5mm／59.5±0.5mm／79.5±0.5mm Label width 54±0.5mm／56±0.5mm／76±0.5mm Length 25 to 350mm Label gap 3 to 6mm 0 to 6mm Rolling up direction Label surface is outside of a roll Black mark size

－ Width：12mm or more Length：4 to 6mm

Density of black mark －

Ink：Reflective ratio should be 7％ or less.

Note 1. Above illustration shows the paper width 80.0mm..

Note 2. The position of black mark is decided by that of black mark.

Note 3. When 58mm／60mm width paper is used, the black mark sensor must be installed on left side.

1.75 or more 1.75 or more

Label gap (L2) 3 to 6mm

Label length (L1) 25 to 350

Label pitch L1+L2

（Unit：mm）

Front（Label surface）

4～6

12 or more

Paper feed

Black mark（Reverse side）

Black mark position Note2,3

12 or more Paper feed

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SK1-21A/31A

（6）Printing area

・The tolerance of the embedded sensor and initial printing position varies about

±2mm from calculated position. ・Take into account the tolerance of paper feed about ±2% when a label is

designed.

Print area

3±2（Right margin） 3±2（Left margin）

2.5 or more（Upper margin）

2.5 or more（Lower margin）

（Unit：mm）

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SK1-21A/31A

9．Maintenance

9- 1．Maintenance

Periodically clean the printer to maintain the printing quality and avoid failures. It is recommended to maintain the printer every 6 months or 1 million lines of printing.

（1）Print head When cleaning the thermal dot line on the print head, use a cotton swab with alcohol (ethanol, methanol or Isopropyl alcohol) and wipe off stains and dust.

（2）Platen roller

When cleaning the platen roller, use a dry soft cloth and wipe off the stain with rotating the roller.

（3）Sensor and peripherals Clean the stain, dust and paper powder on the paper empty sensor and paper cover

sensor.

・ Prior to maintenance work, be sure to turn OFF the printer. ・ Avoid cleaning the print head immediately because the print head is hot.

Start maintenance work after the thermal head becomes cool. ・ Do not touch the print head with fingers directly. It may cause damage by electrostatic discharge and contamination.

・ Do not touch the thermal head dot line with bare hands or metal objects. ・ Do not use volatile chemical agents, such as thinner and benzene. ・ Do not get moisture or spill liquids inside of the printer. ・ Turn ON the printer only after alcohol is completely dried.

Thermal dot line

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SK1-21A/31A

9- 2．Service for trouble shooting

For maintenance and service, please contact your Sanei local distributors or the following address.

Sanei Electric Inc. Overseas sales division 2-61-1 Ikebukuro, Toshima-Ku, Tokyo 171-0014, Japan TEL: 81-3-3986-1188 FAX: 81-3-3988-5876

www.sanei-elec.co.jp

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SK1-21A/31A

10．Command systems

Command systems are compatible with ESC/POS. The details please refer to separate volume “command reference”.

10- 1．Command table

1. Paper feed command

Command Standard mode Page mode CR Carriage return / Line feed Retrieve page memory / Carriage return LF Carriage return / Line feed Retrieve page memory / Carriage return FF Page length printing Printing in page mode and returning to

standard mode ESC C Set the page length （Setting only） ESC J Printing and feed forward Move Y axis in the forward direction ESC j Printing and back feed Move Y axis in the backward direction ESC d Printing and consecutive line feed Consecutive line feed

2．Tab command

Command Standard mode Page mode HT Horizontal tab ESC D Set horizontal tab

3．Format command

Command Standard mode Page mode ESC 2 Set the initial linefeed value ESC 3 Set the linefeed value ESC SP Set the right margin GS L Set the left margin （Setting only） GS W Set the printing area width （Setting only） ESC $ Set absolute position of the

Printing area （Setting only）

ESC a Align the position

4．Character modification command

Command Standard mode Page mode ESC ! Modify character specifications in a batch ESC G ESC E

Specify the bold character / cancel

ESC Specify inverse printing / cancel Specify inverse printing / cancel ESC - Specify underline / cancel GS ! Set a character size GS B Specify the black and white reverse character / cancel GS b Specify and Cancel a smoothing font

5．Character Selection Command

Command Standard mode Page mode ESC M Choose a character font ESC R Choose an international character ESC t Choose the character code table ESC & Register a download character ESC ? Erase a download character ESC % Specify and cancel a download character

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SK1-21A/31A

6．Bit Image Command

Command Standard mode Page mode ESC * Specify the bit image GS * Register the downloaded bit image GS / Print the download bit image DC2 V Specify the high-speed bit image DC2 v Print pressed rasta bit image ESC b Specify the high-speed bit image with indicated printing width

7．Page Mode Command

Command Standard mode Page mode ESC L Select the page mode （Invalid） ESC S （Invalid） Select the standard mode ESC FF （Invalid） Print all page mode memories. CAN Erase the print buffer Clear page mode memories ESC T （Invalid） Select printing direction and initial position ESC W （Invalid） Defining the print area

8．Peripheral Equipment Command

Command Standard mode Page mode ESC = Select peripheral ESC c 3 Select paper sensor to output PE signal ESC c 5 Specify or cancel panel switch ESC c 6 Enable / Disable paper loading ESC i Full cut ESC m Partial cut GS V Paper cut

9. Response Command（Installed in Serial interface）

Command Standard mode Page mode GS a Valid / Invalid of automatic status transmission GS r Transmit status GS DLE Valid/Invalid of real-time status transmission GS EOT Transmit status in real-time GS E Answer the string GS R1 Check printer status GS R 3 Print start /cut end automatic status transmission GS I Send printer ID ESC s Send a printer information ESC v Send a printer status in the present

10．Printing Image Registration Command

Command Standard mode Page mode FS Q Specification of image registration onto the nonvolatile memory FS R Cancel Image registration in the nonvolatile memory FS O Set printing image registered in the nonvolatile memory FS P Cancel printing image registered in the nonvolatile memory

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SK1-21A/31A

11．Ruled Line Command

Command Standard mode Page mode DC3 A Choose ruled line buffer A DC3 B Choose ruled line buffer B DC3 C Clear the ruled line buffer DC3 D Write dot specification to the ruled line buffer DC3 L Write line specification of the ruled line buffer DC3 + Enable the ruled line printing mode DC3 - Disable the ruled line printing mode DC3 P Execute printing of 1 dot ruled line

12．Function Setting Command

Command Standard mode Page mode ESC ＠ Initialization DC2 D Reserve and release a download character registration area DC2 G Reserve and release a user-defined character registration area DC2 ～ Set printing density GS ( A Self test print DC1 Software reset DC2 R Read a software memory switch GS G Specify the stored buffering mode / cancel DC2 K Set the memory switch

13．Barcode Command

Command Standard mode Page mode GS H Set the HRI character printing GS h Set the barcode height GS w Set the barcode width GS k Print barcode

14．2D Barcode Command（OPTION）

Command Standard mode Page mode GS Q Print two dimensional barcode

（PDF417, MicroPDF417, DataMatrix, MaxiCode, QRCode ） GS S Change the cell size of two dimensional barcode

15．Label Command

Command Standard mode Page mode DC2 L Set the length of label DC2 l Label feed DC2 B Re-detect of marking position DC2 mrk Set the marking threshold

16．Presenter Command

Command Standard mode Page mode ESC h Select the active mode on the presenter ESC r 0 Select the presenter operation ESC r 1 Set the time-out for the retractive mode. ESC r 3 Select the presenter mode ESC r @ Reset of the presenter error factor

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SK1-21A/31A

10- 2．Data code table

PC437

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SK1-21A/31A

KATAKANA

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SK1-21A/31A

PC850